Redesign public profiles and toots (#8068)

app/views/application/_card.html.haml

@@ -0,0 +1,16 @@
+- account_url = local_assigns[:admin] ? admin_account_path(account.id) : TagManager.instance.url_for(account)
+
+.card.h-card
+  = link_to account_url, target: '_blank', rel: 'noopener' do
+    .card__img
+      = image_tag account.header.url, alt: ''
+    .card__bar
+      .avatar
+        = image_tag account.avatar.url, alt: '', width: 48, height: 48, class: 'u-photo'
+
+      .display-name
+        %bdi
+          %strong.emojify.p-name= display_name(account, custom_emojify: true)
+        %span
+          = acct(account)
+          = fa_icon('lock') if account.locked?

app/views/application/_sidebar.html.haml

@@ -0,0 +1,6 @@
+.hero-widget
+  .hero-widget__img
+    = image_tag @instance_presenter.hero&.file&.url || @instance_presenter.thumbnail&.file&.url || asset_pack_path('preview.jpg'), alt: @instance_presenter.site_title
+
+  .hero-widget__text
+    %p= @instance_presenter.site_description.html_safe.presence || t('about.generic_description', domain: site_hostname)